28197119 has 2 divisors, whose sum is σ = 28197120. Its totient is φ = 28197118.

The previous prime is 28197061. The next prime is 28197131. The reversal of 28197119 is 91179182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28197119 - 2²⁰ = 27148543 is a prime.

It is a super-2 number, since 2×28197119² = 1590155039800322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28197179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14098559 + 14098560.

It is an arithmetic number, because the mean of its divisors is an integer number (14098560).

Almost surely, 2^28197119 is an apocalyptic number.

28197119 is a deficient number, since it is larger than the sum of its proper divisors (1).

28197119 is an equidigital number, since it uses as much as digits as its factorization.

28197119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 38.

The square root of 28197119 is about 5310.0959501689. The cubic root of 28197119 is about 304.3698141088.

The spelling of 28197119 in words is "twenty-eight million, one hundred ninety-seven thousand, one hundred nineteen".